<template>
  <div ref="chartRef" :style="{ height, width }"></div>
</template>
<script lang="ts">
import { defineComponent, PropType, ref, Ref, reactive, watchEffect } from 'vue';
import { useECharts } from '@/hooks/web/useECharts';

export default defineComponent({
  name: 'line',
  props: {
    chartData: {
      type: Array,
      default: () => [],
    },
    option: {
      type: Object,
      default: () => ({}),
    },
    width: {
      type: String as PropType<string>,
      default: '100%',
    },
    height: {
      type: String as PropType<string>,
      default: 'calc(100vh - 78px)',
    },
  },
  setup(props) {
    const chartRef = ref<HTMLDivElement | null>(null);
    const { setOptions, echarts } = useECharts(chartRef as Ref<HTMLDivElement>);
    const option = reactive({
      tooltip: {
        trigger: 'axis',
        axisPointer: {
          type: 'shadow',
          label: {
            show: true,
            backgroundColor: '#333',
          },
        },
      },
      xAxis: {
        type: 'category',
        data: [],
      },
      yAxis: {
        type: 'value',
      },
      series: [
        {
          type: 'line',
          showSymbol: false,
          smooth: true,
          areaStyle: {},
          data: [],
        },
      ],
    });

    watchEffect(() => {
      props.chartData && initCharts();
    });

    function initCharts() {
      if (props.option) {
        Object.assign(option, props.option);
      }
      let seriesData = props.chartData.map(item => {
        return item.value;
      });
      let xAxisData = props.chartData.map(item => {
        return item.name;
      });
      option.series[0].data = seriesData;
      option.xAxis.data = xAxisData;
      setOptions(option);
    }
    return { chartRef };
  },
});
</script>
